LDK 5417 + LDK 4417 User’s Guide | Base Station installation
32
The horizontal phase of the composite signal with respect to the external reference signal is
adjusted using the
«
H COARSE»
and
«
H FINE»
thumbwheels:
The SC/H phase alignment of the composite output signal is adjusted using the «
SC/H
»
thumbwheel.
Adjustment of the front porch of the composite signal is made using the «
FRONT PORCH
»
thumbwheel.
Equipment without external reference (free mode)
The
«
H COARSE»
and
«
H FINE»
thumbwheels are inactive.
The output composite signal SC/H phase alignment is adjusted using the «
SC/H
»
thumbwheel.
The output composite signal front porch duration is adjusted using the «
FRONT PORCH
»
thumbwheel.
10.4 Adaptation of BS to external on-air signal controls from
the studio
The «ON AIR 1» and «ON AIR 2» main and secondary studio commands received by the Base
Station may be of two different forms:
•
A DC voltage of b 5 Volts and + 48 Volts.
•
A closed loop (contact).
Adaptation is made in the «SOUND/AUX» board of the Base Station.
Depending on the type of signal from the mixer, set selector switches S800 and S801 (ON AIR
1) and S900 and S901 (ON AIR 2) to the positions indicated in the figure.
ON AIR 1
S800
S801
R500
S500
CONTACT
+12dB
0dB
VOLTAGE
MIC-2
MIC-1
OUT LEVEL
R540
S540
+12dB
0dB
+12dB
0dB
4W
RTS
OUT LEVEL
CCU->CAM
CAM->CCU
ON AIR 2
S900
S581
R580
S580
S560
S901
CONTACT
OUT LEVEL
VOLTAGE
SOUND / AUX PCB
S800-S801
Control
Contact (up)
Loop (contact)
Voltage (down)
+5 V to +48 V
